linux-kernel - [PATCH 6/7] kernel/mutex: mutex_is

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Message-Id: <1513266622-15860-7-git-send-email-baiyaowei@cmss.chinamobile.com>
Date:   Thu, 14 Dec 2017 10:50:21 -0500
From:   Yaowei Bai <baiyaowei@...s.chinamobile.com>
To:     akpm@...ux-foundation.org, rdunlap@...radead.org,
        rientjes@...gle.com, joe@...ches.com
Cc:     linux-kernel@...r.kernel.org, baiyaowei@...s.chinamobile.com
Subject: [PATCH 6/7] kernel/mutex: mutex_is_locked can be boolean

This patch makes mutex_is_locked return bool due to this
particular function only using either one or zero as its return
value.

No functional change.

Signed-off-by: Yaowei Bai <baiyaowei@...s.chinamobile.com>
---
 include/linux/mutex.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index 153274f..f25c134 100644
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -138,9 +138,9 @@ extern void __mutex_init(struct mutex *lock, const char *name,
  * mutex_is_locked - is the mutex locked
  * @lock: the mutex to be queried
  *
- * Returns 1 if the mutex is locked, 0 if unlocked.
+ * Returns true if the mutex is locked, false if unlocked.
  */
-static inline int mutex_is_locked(struct mutex *lock)
+static inline bool mutex_is_locked(struct mutex *lock)
 {
 	/*
 	 * XXX think about spin_is_locked
-- 
1.8.3.1